Thanks for bringing that to my attention Tony, I nearly forgot about the article, I've just read it online, and will try to get a copy this side of the pond. As for the car I've been using it as a daily driver and ironing out some of the smaller issues. I was going to buy a second car but I'm enjoying the flexibilty of the LT5.
Note; The report was not totally accurate, as is normal when things are being relayed 2nd or 3rd hand. Marc Haibeck did not comment on the chip as per article, myself and other ZR-1 Owners in the UK came to that conclusion when hooking up to the relevant software, I consequently ordered the chip from Haibecks. Whilst rebuilding the motor and using other services in America I found they remained professional at all times and did not comment on the past engines issues.